The Blues have now suffered 10 consecutive losses to the Crusaders after Super Rugby's leaders edged a tense Christchurch encounter.
There will be a new Top 14 champion after Castres missed out on a top-six finish with a final-day defeat to Toulon.
Will Genia's head injury was the only disappointment for the Rebels as they thrashed the rock-bottom Sunwolves in Tokyo on Saturday.
A 19-13 defeat to the Chiefs has ruined the Reds' hopes of reaching the Super Rugby finals, while the Brumbies beat the Bulls on Friday.
While out of the England picture, Danny Cipriani's Gloucester form has seen him named the Premiership's outstanding player.
Bristol Bears have changed Pat Lam's title to director of rugby after he signed a new deal at Ashton Gate.
Scott Sio signed a deal with the Wallabies and Brumbies until at least the end of 2022.
Cian Healy says he is "part of something bigger than just a rugby team" representing Leinster and Ireland.
After announcing his retirement following 20 years as a professional, George Smith said rugby union had "given me so much".
Though he has not appealed against his ban, Israel Folau is still considering his options after his contract was terminated.